National Instruments NI 9472 Bedienungsanleitung
NI-9472 Getting
Started
2022-07-06
Contents
Overview. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
NI-9472 with Screw Terminal and Spring Terminal Safety Voltages. . . . . . . . . . . 3
NI-9472 with DSUB Safety Voltages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Safety Guidelines for Hazardous Voltages. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Safety Guidelines for Hazardous Locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Electromagnetic Compatibility Guidelines. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Special Conditions for Marine Applications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Preparing the Environment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
NI 9472 Pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Connecting Digital Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Increasing Current Drive. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
High-Vibration Application Connections. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
I/O Protection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Power Supplies and Overcurrent Conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Detecting an Overcurrent Condition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Resetting Channels aer an Overcurrent Condition. . . . . . . . . . . . . . . . . . . . . . . . 13
Where to Go Next. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
NI Services. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
ni.com
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NI-9472 Getting Started
Overview
This document explains how to connect to the NI-9472. In this document, the
NI-9472 with screw terminal, NI-9472 with spring terminal, and NI-9472 with DSUB
are referred to inclusively as the NI-9472.
Note Before you begin, read the NI-9472 Safety, Environmental, and
Regulatory Information document on ni.com/manuals and complete the
soware and hardware installation procedures in your chassis
documentation.
Note The guidelines in this document are specific to the NI-9472. The
other components in the system might not meet the same safety ratings.
Refer to the documentation for each component in the system to
determine the safety and EMC ratings for the entire system.
Safety Guidelines
Caution Observe all instructions and cautions in the user documentation.
Using the product in a manner not specified can damage the product and
compromise the built-in safety protection.
Attention Suivez toutes les instructions et respectez toutes les mises
en garde de la documentation d'utilisation. L'utilisation du produit de
toute autre façon que celle spécifiée risque de l'endommager et de
compromettre la protection de sécurité intégrée.
NI-9472 with Screw Terminal and Spring Terminal Safety Voltages
Connect only voltages that are within the following limits.
Channel-to-COM 30 VDC maximum
© National Instruments 3
NI-9472 Getting Started
Isolation
Channel-to-channel None
Channel-to-earth ground
Continuous 250 Vrms, Measurement Category II
Withstand 2,300 Vrms, verified by a 5 s dielectric withstand test
Caution Do not connect the product to signals or use for measurements
within Measurement Categories III or IV.
Attention Ne pas connecter le produit à des signaux dans les catégories
de mesure III ou IV et ne pas l'utiliser pour eectuer des mesures dans ces
catégories.
Measurement Category II is for measurements performed on circuits directly
connected to the electrical distribution system. This category refers to local-level
electrical distribution, such as that provided by a standard wall outlet, for example,
115 V for U.S. or 230 V for Europe.
NI-9472 with DSUB Safety Voltages
Connect only voltages that are within the following limits.
Channel-to-COM 30 VDC maximum
Isolation
Channel-to-channel None
Channel-to-earth ground
Continuous 60 VDC, Measurement Category I
Withstand 1,000 Vrms, verified by a 5 s dielectric withstand test
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NI-9472 Getting Started
Caution Do not connect the product to signals or use for measurements
within Measurement Categories II, III, or IV.
Attention Ne pas connecter le produit à des signaux dans les catégories
de mesure II, III ou IV et ne pas l'utiliser pour eectuer des mesures dans
ces catégories.
Warning Do not connect the product to signals or use for measurements
within Measurement Categories II, III, or IV, or for measurements on MAINs
circuits or on circuits derived from Overvoltage Category II, III, or IV which
may have transient overvoltages above what the product can withstand.
The product must not be connected to circuits that have a maximum
voltage above the continuous working voltage, relative to earth or to
other channels, or this could damage and defeat the insulation. The
product can only withstand transients up to the transient overvoltage
rating without breakdown or damage to the insulation. An analysis of
the working voltages, loop impedances, temporary overvoltages, and
transient overvoltages in the system must be conducted prior to making
measurements.
Mise en garde Ne pas connecter le produit à des signaux dans les
catégories de mesure II, III ou IV et ne pas l'utiliser pour des mesures dans
ces catégories, ou des mesures sur secteur ou sur des circuits dérivés de
surtensions de catégorie II, III ou IV pouvant présenter des surtensions
transitoires supérieures à ce que le produit peut supporter. Le produit
ne doit pas être raccordé à des circuits ayant une tension maximale
supérieure à la tension de fonctionnement continu, par rapport à la
terre ou à d'autres voies, sous peine d'endommager et de compromettre
l'isolation. Le produit peut tomber en panne et son isolation risque
d'être endommagée si les tensions transitoires dépassent la surtension
transitoire nominale. Une analyse des tensions de fonctionnement, des
impédances de boucle, des surtensions temporaires et des surtensions
© National Instruments 5
NI-9472 Getting Started
transitoires dans le système doit être eectuée avant de procéder à des
mesures.
Measurement Category I is for measurements performed on circuits not directly
connected to the electrical distribution system referred to as MAINS voltage. MAINS
is a hazardous live electrical supply system that powers equipment. This category is
for measurements of voltages from specially protected secondary circuits. Such
voltage measurements include signal levels, special equipment, limited-energy
parts of equipment, circuits powered by regulated low-voltage sources, and
electronics.
Note Measurement Categories CAT I and CAT O are equivalent. These test
and measurement circuits are for other circuits not intended for direct
connection to the MAINS building installations of Measurement Categories
CAT II, CAT III, or CAT IV.
Safety Guidelines for Hazardous Voltages
You can connect hazardous voltages only to the NI-9472 with screw terminal and the
NI-9472 with spring terminal. Do not connect hazardous voltages to the NI-9472 with
DSUB.
Caution Ensure that hazardous voltage wiring is performed only by
qualified personnel adhering to local electrical standards.
Caution Do not mix hazardous voltage circuits and human-accessible
circuits on the same module.
Caution Ensure that devices and circuits connected to the module are
properly insulated from human contact.
Caution When module terminals are hazardous voltage LIVE (>42.4 Vpk/
60 V DC), you must ensure that devices and circuits connected to the
module are properly insulated from human contact. You must use the NI
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NI-9472 Getting Started
9927 connector backshell kit with the NI-9472 with screw terminal and the
NI 9981 connector backshell kit with the NI-9472 with spring terminal to
ensure that the terminals are not accessible.
Safety Guidelines for Hazardous Locations
The NI-9472 is suitable for use in Class I, Division 2, Groups A, B, C, D, T4 hazardous
locations; Class I, Zone 2, AEx nA IIC T4 Gc and Ex nA IIC T4 Gc hazardous locations;
and nonhazardous locations only. Follow these guidelines if you are installing the
NI-9472 in a potentially explosive environment. Not following these guidelines may
result in serious injury or death.
Caution Do not disconnect I/O-side wires or connectors unless power has
been switched o or the area is known to be nonhazardous.
Caution Do not remove modules unless power has been switched o or
the area is known to be nonhazardous.
Caution Substitution of components may impair suitability for Class I,
Division 2, or Zone 2.
Caution The system must be installed in an enclosure certified for the
intended hazardous (classified) location, having a tool secured cover/door,
where a minimum protection of at least IP54 is provided.
Special Conditions for Hazardous Locations Use in Europe and
Internationally
The NI-9472 has been evaluated as Ex nA IIC T4 Gc equipment under
DEMKO 03ATEX 0324020X and is IECEx UL 14.0089X certified. Each NI-9472 is marked
II 3G and is suitable for use in Zone 2 hazardous locations, in ambient
temperatures of -40 °C ≤ Ta ≤ 70 °C. If you are using the NI-9472 in Gas Group IIC
hazardous locations, you must use the device in an NI chassis that has been
evaluated as Ex nC IIC T4, Ex IIC T4, Ex nA IIC T4, or Ex nL IIC T4 equipment.
© National Instruments 7
NI-9472 Getting Started
Caution Transient protection shall be provided that is set at a level not
exceeding 140% of the peak rated voltage value of 85 V at the supply
terminals to the equipment.
Caution The system shall only be used in an area of not more than
Pollution Degree 2, as defined in IEC/EN 60664-1.
Caution The system shall be mounted in an ATEX/IECEx-certified
enclosure with a minimum ingress protection rating of at least IP54 as
defined in IEC/EN 60079-15.
Caution The enclosure must have a door or cover accessible only by the
use of a tool.
Electromagnetic Compatibility Guidelines
This product was tested and complies with the regulatory requirements and limits
for electromagnetic compatibility (EMC) stated in the product specifications. These
requirements and limits provide reasonable protection against harmful interference
when the product is operated in the intended operational electromagnetic
environment.
This product is intended for use in industrial locations. However, harmful
interference may occur in some installations, when the product is connected to a
peripheral device or test object, or if the product is used in residential or
commercial areas. To minimize interference with radio and television reception and
prevent unacceptable performance degradation, install and use this product in strict
accordance with the instructions in the product documentation.
Furthermore, any changes or modifications to the product not expressly approved
by National Instruments could void your authority to operate it under your local
regulatory rules.
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NI-9472 Getting Started
Special Conditions for Marine Applications
Some products are approved for marine (shipboard) applications. To verify marine
approval certification for a product, visit ni.com/product-certifications, search by
model number, and click the appropriate link.
Notice In order to meet the EMC requirements for marine applications,
install the product in a shielded enclosure with shielded and/or filtered
power and input/output ports. In addition, take precautions when
designing, selecting, and installing measurement probes and cables to
ensure that the desired EMC performance is attained.
Preparing the Environment
Ensure that the environment in which you are using the NI-9472 meets the following
specifications.
Operating temperature (IEC 60068-2-1, IEC 60068-2-2) -40 °C to 70 °C
Operating humidity (IEC 60068-2-78) 10% RH to 90% RH, noncondensing
Pollution Degree 2
Maximum altitude 2,000 m
Indoor use only.
Note Refer to the device datasheet on ni.com/manuals for complete
specifications.
NI 9472 Pinout
© National Instruments 9
NI-9472 Getting Started
DO0
DO1
DO2
DO3
DO4
DO5
DO6
DO7
Vsup
COM
0
1
2
3
4
5
6
7
8
9
COM
Vsup
COM
COM
Vsup
COM
COM
Vsup
COM
COM
Vsup
COM
COM
DO0
Vsup
DO1
DO2
Vsup
DO3
DO4
Vsup
DO5
DO6
Vsup
DO7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
DO0
DO1
DO2
DO3
DO4
DO5
DO6
DO7
Vsup
COM
0
1
2
3
4
5
6
7
8
9
Note You must use 2-wire ferrules to create a secure connection when
connecting more than one wire to a single terminal on the NI-9472 with
screw terminal or NI-9472 with spring terminal.
Signal Description
COM Common reference connection to isolated ground
DO Digital output signal connection
Vsup Voltage supply connection
Table 1. NI-9472 Signal Descriptions
LED Pattern Indication
Solid The channel has been programmed to be in the ON state.
O The channel has been programmed to be in the OFF state.
Table 2. LED Indicators
Connecting Digital Devices
You can connect a variety of industrial devices, such as solenoids, motors, actuators,
relays, and lamps to the NI-9472. You must connect an external power supply to the
NI-9472. The power supply provides the current for the output channels.
ni.com
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NI-9472 Getting Started
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